Home / 20,856.18-31,289.00-6,816.02

Finding the Fourth Proportional to 20,856.18, 31,289.00 and 6,816.02

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Solution

The fourth proportional to 20,856.18, 31,289.00 and 6,816.02 is: 10,225.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.18 : 31,289.00 = 6,816.02 : x
  2. Step 2: Convert to fraction form
    20,856.18/31,289.00 = 6,816.02/x
  3. Step 3: Cross multiply
    20,856.18x = 31,289.00 × 6,816.02
  4. Step 4: Simplify right side
    20,856.18x = 213,266,297.60
  5. Step 5: Solve for x
    x = 213,266,297.60/20,856.18
  6. Step 6: Final answer
    x = 10,225.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.